Study of exclusive one-pion and one-eta production using hadron and dielectron channels in pp reactions at kinetic beam energies of 1.25 GeV and 2.2 GeV with HADES

G. Agakishiev; H. Alvarez-Pol; A. Balanda; R. Bassini; M. Böhmer; H. Bokemeyer; J. L. Boyard; P. Cabanelas; S. Chernenko; T. Christ; M. Destefanis; F. Dohrmann; A. Dybczak; T. Eberl; L. Fabbietti; O. Fateev; P. Finocchiaro; J. Friese; I. Fröhlich; T. Galatyuk; J. A. Garzón; R. Gernhäuser; C. Gilardi; M. Golubeva; D. González-Diaz; F. Guber; M. Gumberidze; T. Hennino; R. Holzmann; A. Ierusalimov; I. Iori; A. Ivashkin; M. Jurkovic; B. Kämpfer; K. Kanaki; T. Karavicheva; I. Koenig; W. Koenig; B. W. Kolb; R. Kotte; A. Kozuch; F. Krizek; W. Kühn; A. Kugler; A. Kurepin; S. Lang; K. Lapidus; T. Liu; L. Maier; J. Markert; V. Metag; B. Michalska; E. Morinière; J. Mousa; M. Münch; C. Müntz; L. Naumann; J. Otwinowski; Y. C. Pachmayer; V. Pechenov; O. Pechenova; T. Pérez Cavalcanti; J. Pietraszko; V. Pospisil; W. Przygoda; B. Ramstein; A. Reshetin; M. Roy-Stephan; A. Rustamov; A. Sadovsky; B. Sailer; P. Salabura; M. Sánchez; A. Schmah; E. Schwab; Yu G. Sobolev; S. Spataro; B. Spruck; H. Ströbele; J. Stroth; C. Sturm; A. Tarantola; K. Teilab; P. Tlusty; A. Toia; M. Traxler; R. Trebacz; H. Tsertos; V. Wagner; M. Wisniowski; T. Wojcik; J. Wüstenfeld; S. Yurevich; Y. Zanevsky; P. Zumbruch

doi:10.1140/epja/i2012-12074-9

Study of exclusive one-pion and one-eta production using hadron and dielectron channels in pp reactions at kinetic beam energies of 1.25 GeV and 2.2 GeV with HADES

G. Agakishiev, H. Alvarez-Pol, A. Balanda, R. Bassini, M. Böhmer, H. Bokemeyer, J. L. Boyard, P. Cabanelas, S. Chernenko, T. Christ, M. Destefanis, F. Dohrmann, A. Dybczak, T. Eberl, L. Fabbietti, O. Fateev, P. Finocchiaro, J. Friese, I. Fröhlich, T. GalatyukJ. A. Garzón, R. Gernhäuser, C. Gilardi, M. Golubeva, D. González-Diaz, F. Guber, M. Gumberidze, T. Hennino, R. Holzmann, A. Ierusalimov, I. Iori, A. Ivashkin, M. Jurkovic, B. Kämpfer, K. Kanaki, T. Karavicheva, I. Koenig, W. Koenig, B. W. Kolb, R. Kotte, A. Kozuch, F. Krizek, W. Kühn, A. Kugler, A. Kurepin, S. Lang, K. Lapidus, T. Liu, L. Maier, J. Markert, V. Metag, B. Michalska, E. Morinière, J. Mousa, M. Münch, C. Müntz, L. Naumann, J. Otwinowski, Y. C. Pachmayer, V. Pechenov, O. Pechenova, T. Pérez Cavalcanti, J. Pietraszko, V. Pospisil, W. Przygoda, B. Ramstein, A. Reshetin, M. Roy-Stephan, A. Rustamov, A. Sadovsky, B. Sailer, P. Salabura, M. Sánchez, A. Schmah, E. Schwab, Yu G. Sobolev, S. Spataro, B. Spruck, H. Ströbele, J. Stroth, C. Sturm, A. Tarantola, K. Teilab, P. Tlusty, A. Toia, M. Traxler, R. Trebacz, H. Tsertos, V. Wagner, M. Wisniowski, T. Wojcik, J. Wüstenfeld, S. Yurevich, Y. Zanevsky, P. Zumbruch

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Abstract

We present measurements of exclusive π^+,0 and η production in pp reactions at 1. 25GeV and 2. 2GeV beam kinetic energy in hadron and dielectron channels. In the case of π⁺ and π⁰, high-statistics invariant-mass and angular distributions are obtained within the HADES acceptance as well as acceptance-corrected distributions, which are compared to a resonance model. The sensitivity of the data to the yield and production angular distribution of Δ(1232) and higher-lying baryon resonances is shown, and an improved parameterization is proposed. The extracted cross-sections are of special interest in the case of pp → ppη, since controversial data exist at 2. 0GeV; we find σ = 0. 142±0. 022mb. Using the dielectron channels, the π⁰ and η Dalitz decay signals are reconstructed with yields fully consistent with the hadronic channels. The electron invariant masses and acceptance-corrected helicity angle distributions are found in good agreement with model predictions.

Original language	English
Article number	74
Pages (from-to)	1-17
Number of pages	17
Journal	European Physical Journal A
Volume	48
Issue number	5
DOIs	https://doi.org/10.1140/epja/i2012-12074-9
State	Published - 2012
Externally published	Yes

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Agakishiev, G., Alvarez-Pol, H., Balanda, A., Bassini, R., Böhmer, M., Bokemeyer, H., Boyard, J. L., Cabanelas, P., Chernenko, S., Christ, T., Destefanis, M., Dohrmann, F., Dybczak, A., Eberl, T., Fabbietti, L., Fateev, O., Finocchiaro, P., Friese, J., Fröhlich, I., ... Zumbruch, P. (2012). Study of exclusive one-pion and one-eta production using hadron and dielectron channels in pp reactions at kinetic beam energies of 1.25 GeV and 2.2 GeV with HADES. European Physical Journal A, 48(5), 1-17. Article 74. https://doi.org/10.1140/epja/i2012-12074-9

@article{8c130057317c4e1c8b82ab19f872bac0,

title = "Study of exclusive one-pion and one-eta production using hadron and dielectron channels in pp reactions at kinetic beam energies of 1.25 GeV and 2.2 GeV with HADES",

abstract = "We present measurements of exclusive π+,0 and η production in pp reactions at 1. 25GeV and 2. 2GeV beam kinetic energy in hadron and dielectron channels. In the case of π+ and π0, high-statistics invariant-mass and angular distributions are obtained within the HADES acceptance as well as acceptance-corrected distributions, which are compared to a resonance model. The sensitivity of the data to the yield and production angular distribution of Δ(1232) and higher-lying baryon resonances is shown, and an improved parameterization is proposed. The extracted cross-sections are of special interest in the case of pp → ppη, since controversial data exist at 2. 0GeV; we find σ = 0. 142±0. 022mb. Using the dielectron channels, the π0 and η Dalitz decay signals are reconstructed with yields fully consistent with the hadronic channels. The electron invariant masses and acceptance-corrected helicity angle distributions are found in good agreement with model predictions.",

author = "G. Agakishiev and H. Alvarez-Pol and A. Balanda and R. Bassini and M. B{\"o}hmer and H. Bokemeyer and Boyard, {J. L.} and P. Cabanelas and S. Chernenko and T. Christ and M. Destefanis and F. Dohrmann and A. Dybczak and T. Eberl and L. Fabbietti and O. Fateev and P. Finocchiaro and J. Friese and I. Fr{\"o}hlich and T. Galatyuk and Garz{\'o}n, {J. A.} and R. Gernh{\"a}user and C. Gilardi and M. Golubeva and D. Gonz{\'a}lez-Diaz and F. Guber and M. Gumberidze and T. Hennino and R. Holzmann and A. Ierusalimov and I. Iori and A. Ivashkin and M. Jurkovic and B. K{\"a}mpfer and K. Kanaki and T. Karavicheva and I. Koenig and W. Koenig and Kolb, {B. W.} and R. Kotte and A. Kozuch and F. Krizek and W. K{\"u}hn and A. Kugler and A. Kurepin and S. Lang and K. Lapidus and T. Liu and L. Maier and J. Markert and V. Metag and B. Michalska and E. Morini{\`e}re and J. Mousa and M. M{\"u}nch and C. M{\"u}ntz and L. Naumann and J. Otwinowski and Pachmayer, {Y. C.} and V. Pechenov and O. Pechenova and {P{\'e}rez Cavalcanti}, T. and J. Pietraszko and V. Pospisil and W. Przygoda and B. Ramstein and A. Reshetin and M. Roy-Stephan and A. Rustamov and A. Sadovsky and B. Sailer and P. Salabura and M. S{\'a}nchez and A. Schmah and E. Schwab and Sobolev, {Yu G.} and S. Spataro and B. Spruck and H. Str{\"o}bele and J. Stroth and C. Sturm and A. Tarantola and K. Teilab and P. Tlusty and A. Toia and M. Traxler and R. Trebacz and H. Tsertos and V. Wagner and M. Wisniowski and T. Wojcik and J. W{\"u}stenfeld and S. Yurevich and Y. Zanevsky and P. Zumbruch",

year = "2012",

doi = "10.1140/epja/i2012-12074-9",

language = "English",

volume = "48",

pages = "1--17",

journal = "European Physical Journal A",

issn = "1434-6001",

number = "5",

}

Agakishiev, G, Alvarez-Pol, H, Balanda, A, Bassini, R, Böhmer, M, Bokemeyer, H, Boyard, JL, Cabanelas, P, Chernenko, S, Christ, T, Destefanis, M, Dohrmann, F, Dybczak, A, Eberl, T, Fabbietti, L, Fateev, O, Finocchiaro, P, Friese, J, Fröhlich, I, Galatyuk, T, Garzón, JA, Gernhäuser, R, Gilardi, C, Golubeva, M, González-Diaz, D, Guber, F, Gumberidze, M, Hennino, T, Holzmann, R, Ierusalimov, A, Iori, I, Ivashkin, A, Jurkovic, M, Kämpfer, B, Kanaki, K, Karavicheva, T, Koenig, I, Koenig, W, Kolb, BW, Kotte, R, Kozuch, A, Krizek, F, Kühn, W, Kugler, A, Kurepin, A, Lang, S, Lapidus, K, Liu, T, Maier, L, Markert, J, Metag, V, Michalska, B, Morinière, E, Mousa, J, Münch, M, Müntz, C, Naumann, L, Otwinowski, J, Pachmayer, YC, Pechenov, V, Pechenova, O, Pérez Cavalcanti, T, Pietraszko, J, Pospisil, V, Przygoda, W, Ramstein, B, Reshetin, A, Roy-Stephan, M, Rustamov, A, Sadovsky, A, Sailer, B, Salabura, P, Sánchez, M, Schmah, A, Schwab, E, Sobolev, YG, Spataro, S, Spruck, B, Ströbele, H, Stroth, J, Sturm, C, Tarantola, A, Teilab, K, Tlusty, P, Toia, A, Traxler, M, Trebacz, R, Tsertos, H, Wagner, V, Wisniowski, M, Wojcik, T, Wüstenfeld, J, Yurevich, S, Zanevsky, Y & Zumbruch, P 2012, 'Study of exclusive one-pion and one-eta production using hadron and dielectron channels in pp reactions at kinetic beam energies of 1.25 GeV and 2.2 GeV with HADES', European Physical Journal A, vol. 48, no. 5, 74, pp. 1-17. https://doi.org/10.1140/epja/i2012-12074-9

TY - JOUR

T1 - Study of exclusive one-pion and one-eta production using hadron and dielectron channels in pp reactions at kinetic beam energies of 1.25 GeV and 2.2 GeV with HADES

AU - Agakishiev, G.

AU - Alvarez-Pol, H.

AU - Balanda, A.

AU - Bassini, R.

AU - Böhmer, M.

AU - Bokemeyer, H.

AU - Boyard, J. L.

AU - Cabanelas, P.

AU - Chernenko, S.

AU - Christ, T.

AU - Destefanis, M.

AU - Dohrmann, F.

AU - Dybczak, A.

AU - Eberl, T.

AU - Fabbietti, L.

AU - Fateev, O.

AU - Finocchiaro, P.

AU - Friese, J.

AU - Fröhlich, I.

AU - Galatyuk, T.

AU - Garzón, J. A.

AU - Gernhäuser, R.

AU - Gilardi, C.

AU - Golubeva, M.

AU - González-Diaz, D.

AU - Guber, F.

AU - Gumberidze, M.

AU - Hennino, T.

AU - Holzmann, R.

AU - Ierusalimov, A.

AU - Iori, I.

AU - Ivashkin, A.

AU - Jurkovic, M.

AU - Kämpfer, B.

AU - Kanaki, K.

AU - Karavicheva, T.

AU - Koenig, I.

AU - Koenig, W.

AU - Kolb, B. W.

AU - Kotte, R.

AU - Kozuch, A.

AU - Krizek, F.

AU - Kühn, W.

AU - Kugler, A.

AU - Kurepin, A.

AU - Lang, S.

AU - Lapidus, K.

AU - Liu, T.

AU - Maier, L.

AU - Markert, J.

AU - Metag, V.

AU - Michalska, B.

AU - Morinière, E.

AU - Mousa, J.

AU - Münch, M.

AU - Müntz, C.

AU - Naumann, L.

AU - Otwinowski, J.

AU - Pachmayer, Y. C.

AU - Pechenov, V.

AU - Pechenova, O.

AU - Pérez Cavalcanti, T.

AU - Pietraszko, J.

AU - Pospisil, V.

AU - Przygoda, W.

AU - Ramstein, B.

AU - Reshetin, A.

AU - Roy-Stephan, M.

AU - Rustamov, A.

AU - Sadovsky, A.

AU - Sailer, B.

AU - Salabura, P.

AU - Sánchez, M.

AU - Schmah, A.

AU - Schwab, E.

AU - Sobolev, Yu G.

AU - Spataro, S.

AU - Spruck, B.

AU - Ströbele, H.

AU - Stroth, J.

AU - Sturm, C.

AU - Tarantola, A.

AU - Teilab, K.

AU - Tlusty, P.

AU - Toia, A.

AU - Traxler, M.

AU - Trebacz, R.

AU - Tsertos, H.

AU - Wagner, V.

AU - Wisniowski, M.

AU - Wojcik, T.

AU - Wüstenfeld, J.

AU - Yurevich, S.

AU - Zanevsky, Y.

AU - Zumbruch, P.

PY - 2012

Y1 - 2012

N2 - We present measurements of exclusive π+,0 and η production in pp reactions at 1. 25GeV and 2. 2GeV beam kinetic energy in hadron and dielectron channels. In the case of π+ and π0, high-statistics invariant-mass and angular distributions are obtained within the HADES acceptance as well as acceptance-corrected distributions, which are compared to a resonance model. The sensitivity of the data to the yield and production angular distribution of Δ(1232) and higher-lying baryon resonances is shown, and an improved parameterization is proposed. The extracted cross-sections are of special interest in the case of pp → ppη, since controversial data exist at 2. 0GeV; we find σ = 0. 142±0. 022mb. Using the dielectron channels, the π0 and η Dalitz decay signals are reconstructed with yields fully consistent with the hadronic channels. The electron invariant masses and acceptance-corrected helicity angle distributions are found in good agreement with model predictions.

AB - We present measurements of exclusive π+,0 and η production in pp reactions at 1. 25GeV and 2. 2GeV beam kinetic energy in hadron and dielectron channels. In the case of π+ and π0, high-statistics invariant-mass and angular distributions are obtained within the HADES acceptance as well as acceptance-corrected distributions, which are compared to a resonance model. The sensitivity of the data to the yield and production angular distribution of Δ(1232) and higher-lying baryon resonances is shown, and an improved parameterization is proposed. The extracted cross-sections are of special interest in the case of pp → ppη, since controversial data exist at 2. 0GeV; we find σ = 0. 142±0. 022mb. Using the dielectron channels, the π0 and η Dalitz decay signals are reconstructed with yields fully consistent with the hadronic channels. The electron invariant masses and acceptance-corrected helicity angle distributions are found in good agreement with model predictions.

UR - http://www.scopus.com/inward/record.url?scp=84861949490&partnerID=8YFLogxK

U2 - 10.1140/epja/i2012-12074-9

DO - 10.1140/epja/i2012-12074-9

M3 - Article

AN - SCOPUS:84861949490

SN - 1434-6001

VL - 48

SP - 1

EP - 17

JO - European Physical Journal A

JF - European Physical Journal A

IS - 5

M1 - 74

ER -

Study of exclusive one-pion and one-eta production using hadron and dielectron channels in pp reactions at kinetic beam energies of 1.25 GeV and 2.2 GeV with HADES

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